A Hash is a function object for which the output depends only on the input and has a very low probability of yielding the same output given different input values. Requirements The type T satisfies Hash if. The type T satisfies FunctionObject, CopyConstructible, Destructible, and Given. h, a value of type T or const T, whose argument type is Key k, a value of type convertible to Key or const Key u, an lvalue expression of type Key The following expressions must be valid and have t

void push_front( const T& value ); void push_front( T&& value ); (since C++11) Prepends the given element value to the beginning of the container. All iterators, including the past-the-end iterator, are invalidated. No references are invalidated. Parameters value - the value of the element to prepend Return value (none). Complexity Constant. Exceptions If an exception is thrown, this function has no effect (strong exception guarantee). See also

static constexpr result_type min(); (since C++11) Returns the minimum value potentially generated by the random-number engine. This value is equal to 0u. Parameters (none). Return value The minimum potentially generated value. Complexity Constant. See also max [static] gets the largest possible value in the output range (public static member function)

Defined in header <clocale> std::lconv* localeconv(); The localeconv function obtains a pointer to a static object of type std::lconv, which represents numeric and monetary formatting rules of the current C locale. Parameters (none). Return value Pointer to the current std::lconv object. Notes Modifying the object references through the returned pointer is undefined behavior. std::localeconv modifies a static object, calling it from different threads without synchr

std::error_condition default_error_condition() const; (since C++11) Returns the default error condition for the current error value. Equivalent to category().default_error_condition(value()). Parameters (none). Return value The default error condition for the current error value. Exceptions noexcept specification: noexcept

Defined in header <future> enum class launch : /* unspecified */ { async = /* unspecified */, deferred = /* unspecified */, /* implementation-defined */ }; (since C++11) Specifies the launch policy for a task executed by the std::async function. std::launch is an enumeration used as BitmaskType. The following constants denoting individual bits are defined by the standard library: Constant Explanation std::launch::async a new thread is launched to execu

bool owns_lock() const; (since C++11) Checks whether *this owns a locked mutex or not. Parameters (none). Return value true if *this has an associated mutex and has acquired ownership of it, false otherwise. Exceptions noexcept specification: noexcept See also operator bool tests whether the lock owns its associated mutex (public member function)

size_type max_size() const; (since C++11) Returns the maximum number of elements the container is able to hold due to system or library implementation limitations, i.e. std::distance(begin(), end()) for the largest container. Parameters (none). Return value Maximum number of elements. Exceptions noexcept specification: noexcept Complexity Constant. Notes This value is typically equal to std::numeric_limits<size_type>::max(), and reflects the theoretical limit on t

template< class Key, class Compare, class Alloc > bool operator==( const multiset<Key,Compare,Alloc>& lhs, const multiset<Key,Compare,Alloc>& rhs ); (1) template< class Key, class Compare, class Alloc > bool operator!=( const multiset<Key,Compare,Alloc>& lhs, const multiset<Key,Compare,Alloc>& rhs ); (2) template< class Key, class Compare, class Alloc > bool operator<( const multiset<K

virtual const char* name() const = 0; (since C++11) Returns a pointer to a null-terminated byte string that specifies the name of the error category. Parameters (none). Return value Null-terminated byte string specifying the name of the error category. Exceptions noexcept specification: noexcept